Zp. Jiang et al., TIME-DEPENDENCE OF FRESNEL DIFFRACTION OF ULTRASHORT LASER-PULSES BY A CIRCULAR APERTURE, Applied optics, 36(19), 1997, pp. 4358-4361
We report on the time dependences of the Fresnel diffraction of ultras
hort laser pulses by a circular aperture. The diffraction leads to a p
ulse delay, time shape change, pulse broadening, and peak power decrea
se. These effects may have to be taken into account whenever critical
thresholds are encountered as, for example, in nonlinear optics or las
er fusion. (C) 1997 Optical Society of America.